diff --git a/Tools/build/umarshal.py b/Tools/build/umarshal.py
index e05d93cf23c..8198a1780b8 100644
--- a/Tools/build/umarshal.py
+++ b/Tools/build/umarshal.py
@@ -1,4 +1,4 @@
-# Implementat marshal.loads() in pure Python
+# Implementation of marshal.loads() in pure Python
 
 import ast